#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  for (int i = 1; i <= n; i++) {
    for (int j = 1; j <= n; j++) {
      if (j == 1 || j == n)
        cout << "|";
      else if (i == n / 2 + 1)
        cout << "-";
      else
        cout << "a";
    }
    cout << endl;
  }

  return 0;
}